Apparatus for cutting of an extruded strand of plastically deformable material, preferably of clay

Abstract

Disclosed is an apparatus for cutting of an extruded strand of plastically deformable material, wherein the extruded strand is transferred to a conveyor in a passage distributed in a longitudinal direction along the extruded strand. At least one cutting line extending in transverse direction along the passage is provided, the cutting lines are clamped on a clamping bracket which makes the cutting lines move in a longitudinal direction from one side of the passage to another and then return by a longitudinal driving device and a transverse driving device. The transverse driving device comprises a crank connecting rod with a hinged rod thereon, one end of the hinged rod is pivotally connected with the clamping bracket around a first hinge axes via a first rotating hinged member, the other end of the hinged rod is pivotally connected with at least one swing rod around a second swing shaft via a second rotating hinged member, the other end of the swing rod is pivotally supported on a rotary table bearing around the bearing axes. For purpose of ensuring the length of the clamping bracket transverse movement, the first and second hinge axes as well as bearing axes extend in a longitudinal direction parallel with the passage, the clamping bracket and the crank connecting rod move relatively in a longitudinal guiding device which extends along a longitudinal direction of the passage.

Description

technical field [0001] The invention relates to a strip cutting device. Such devices are used in particular for the manufacture of blanks made of clay or similar materials in the construction industry. Background technique [0002] For this type of device, special movement conditions shall be fulfilled such that the cutting line extending transversely to the conveying direction moves transversely from one side of the conveyor belt when the longitudinal movement corresponds to the conveying speed of the strip being brought forward to the other side. As a result, strips can be cut during transport, wherein both ends of the cutting wire are clamped on the clamping frame, which is moved correspondingly by the longitudinal drive and the transverse drive. [0003] It is known that, on both sides of the strip channel, the holders for the respective ends of the cutting line are moved in horizontal longitudinal guides and vertical transverse guides by means of longitudinal drives a...

AI Technical Summary

Problems solved by technology

In this structure, the clamping frame, which is arranged on both sides and holds the end of the cutting wire, is raised arcuately when it performs the same forward and backward movement, which is limited by the arcuate swing of the hinged rod

This not only results in a transverse movement length for the clamping frame and cutting wire which is longer than would be required for the corresponding transverse dimension of the relative strip, but also results in a relatively large transverse dimension for the device or structural height, and since the lateral part of the arc movement is not required, it also affects the cutting efficiency of the device

[0006] The disadvantage of this known device is also that the performance of the clamping frame and the transverse drive arranged on both sides of the channel is limited by the vertical transverse plane of the tangential point of action between the hinged rod and the clamping frame

Although this shortens the structure of the transverse drive in the conveying direction, it makes it difficult to guide the transverse movement of the clamping frame and tilts the clamping frame in the transverse guide

This can also lead to malfunction, increased loading and wear on the guide surfaces, reducing service life

Although it is conceivable to improve the guidance of the lateral guide by relatively lengthening it, this would lead to a considerable increase in the structure of the device in the lateral direction

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